I had a few areas show up pinholes deep scratches that needed filling so I applied Spot –Lite for this.The bigger stuff that needed filling and blending I used Z-Grip bondo which sands very nice almost like micro. I did find 1 location on the Co-Pilot wing that got filled and 3 on the Pilot wing that was also filled they should be ready for Smooth prime and blocking now.Another good day on my Stay Vacation/Plane!!